白光发光二极管(WLED)具有节能、寿命长、体积小、无污染等优点,被公认是21世纪最有价值的新光源,有望成为第四代照明光源。当前发展WLED的主流是组合蓝光LED与钇铝石榴石荧光粉(YAG:Ce3+)。性能优异的荧光粉可以有效提高WLED发光效率。高温固相法、湿化学法及燃烧合成法等都可用来合成YAG:Ce3+荧光粉。目前商品荧光粉多采用高温固相法生产,该法合成温度高、反应时间长、设备损耗大、产物团聚严重需经过研磨后才能使用,国内外都在研究改进固相法生产工艺或开发新制备工艺。通过分析对比现有的合成方法,认为湿化学法中的共沉淀法最有希望替代高温固相反应法进行工业化生产,本文对这种方法进行了深入研究...White light-emitting diode (WLED) with lots of excellent properties, such as energy saving, long lasting life, small size, non-pollution, is to be considered as the most valuable lighting source and would become the fourth-generation lighting source. The current mainstream of the fabrication for WLED is combination of a blue LED and yellow emitting Y3Al5O12: Ce (YAG: Ce3+). Phosphors with excellen...学位:工学硕士院系专业:化学化工学院材料科学与工程系_材料学学号:1932005130196